US President Donald Trump's former campaign manager Paul Manafort has pleaded not guilty to additional criminal charges ranging from bank fraud to filing false tax returns.

Special Counsel Robert Mueller brought the charges as part of a wide-ranging probe into Russian interference in the 2016 election, possible obstruction of justice, and alleged financial crimes by Mr Manafort and others.

Mr Manafort was Mr Trump's campaign manager for five months in 2016.

Mr Trump has denied that his campaign colluded with Russia.

A federal judge has said Mr Manafort will stand trial on 10 July.